On the first graph the beginning flat line is the reaction. Then comes the hill will it be call the activation energy. The final flat line would be the produce. Same names apply to the 2 graph too
To balance Ca + Cl2 = CaCl2 you'll need to be sure to count all of atoms on each side of the chemical equation.
Once you know how many of each type of atom you can only change the coefficients (the numbers in front of atoms or compounds) to balance the equation for Calcium + Chlorine gas.
Heat the water on an oven burner or place it in sunlight for several days to evaporate the water out of the pan. Allow the water to evaporate away and you will be left with the food coloring remaining in the pan.
(1) A,B,C is your answer, a decreasing pH means there is a higher H+ concentration
Personally the first thing i do, is expand the number
.0000001004
4 sig figs.
